Vertical evacuated glass-tube solar collector (half butterfly)

A high-performance, economical solar collector, easy to install and operate. It works with free (thermosiphon) systems with a tank above it, or with direct and indirect forced unpressurized systems. It consists of evacuated glass tubes connected to a stainless steel manifold insulated with polyurethane and clad in a layer of galvanized sheet. More than one collector can be connected in series to increase the amount of hot water, and it is installed on all types of horizontal and sloping roofs (0-90°). Suitable for domestic and commercial sanitary use such as hotels and residential complexes, swimming pool heating, support of underfloor heating systems and some industrial applications.